The Juan Rosai Collection

Pilar cyst (Skin (scalp)) [1153/1]

Eccrine spiradenoma (with marked myxoid changes) (Skin (calf)) [1153/2]

Aggressive digital papillary adenocarcinoma (of sweat gland origin) (Skin (finger)) [1153/3]

Called neurocristic hamartoma Looks like Helwig's blue melanoma to me (Skin (scalp)) [1153/4]

Blue nevus (skin (scalp)) [1153/5]

Malignant melanoma (anus) [1153/6]

Spindle cell melanoma (Skin (shoulder)) [1153/7]

Eccrine dermal cylindroma (Skin (shoulder)) [1153/8]

Myxoid neurofibroma (with reactive changes resembling decubitus atypical fibroplasia) (skin (shoulder)) [1153/9]

Called atypical fibroxanthoma vs primary or metastatic giant cell carcinoma (Skin, eye (eyebrow)) [1153/10]